Alert archive / Kansas / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 129, NWS Hastings, NE

August 7, 2021Osborne County, Rooks County, Kansas

NWS Hastings, NE issued this severe thunderstorm warning at Aug 7, 2021, 6:44 PM CDT for Osborne County, Rooks County, Kansas. It was in force for 31 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Aug 7, 2021, 6:44 PM CDT (23:44 UTC)
Expired: Aug 7, 2021, 7:15 PM CDT
In force: 31 min
Issued by: NWS Hastings, NE
Area: Storm-based polygon
Hail: 1.25 in
Wind: 60.0 mph

Counties Osborne County, KS, Rooks County, KS

The radar

The Grand Island radar (KUEX), 128 km from the middle of the area, began a volume at 23:46 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Aug 7, 6:35 PM CDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Dodge City, (KDDC), launched 12:00Z, 11.7 hours before the alert went out and 183 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 207 J/kg
Mixed-layer CIN: -591 J/kg
Mixed-layer LCL: 2167 m above ground
0-6 km bulk shear: 19 kt
0-1 km storm-relative helicity: 142 m²/s²
0-3 km storm-relative helicity: 144 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -0.0

Open this sounding in Storm Lab

The text

As transmitted.

709 
WUUS53 KGID 072344
SVRGID
KSC141-163-080015-
/O.NEW.KGID.SV.W.0129.210807T2344Z-210808T0015Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Hastings NE
644 PM CDT Sat Aug 7 2021

The National Weather Service in Hastings has issued a

* Severe Thunderstorm Warning for...
  Rooks County in north central Kansas...
  Osborne County in north central Kansas...

* Until 715 PM CDT.

* At 644 PM CDT, severe thunderstorms were located along a line
  extending from Nicodemus to 9 miles southwest of Palco to 9 miles
  north of Yocemento, moving west at 35 mph.

  HAZARD...60 mph wind gusts and half dollar size hail.

  SOURCE...Radar indicated.

  IMPACT...Hail damage to vehicles is expected. Expect wind damage 
           to roofs, siding, and trees.

* These severe thunderstorms will remain over mainly rural areas of
  Rooks and Osborne Counties.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 3913 9961 3944 9960 3957 9921 3956 9854
      3914 9867 3913 9870
TIME...MOT...LOC 2344Z 110DEG 30KT 3939 9964 3913 9964 3903 9936 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.25 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

Heinlein

The office that day

Everything else NWS Hastings, NE issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Aug 7, 6:36 PM CDT	Severe Thunderstorm Warning	GID	Jewell, Smith	24 min
Aug 7, 6:53 PM CDT	Severe Thunderstorm Warning	GID	Jewell, Smith	52 min

Nearby

Severe Thunderstorm Warnings in Kansas, 2021 Every severe thunderstorm warning in 2021

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.